Volkswagen Workshop Service and Repair Manuals

Notes:

• ◆ From model year 1996 on Ecomatic vehicles a modified pin assignment has been introduced!
• ◆ This assignment is valid for Ecomatic vehicles up to July 1995, assignment for Ecomatic vehicles from August 1995

Fig.1     Connector pin assignment 28 pin socket 1

•      1 -     Ambient temperature sender, earth *
•      2 -     Coolant shortage indicator
•      3 -     Terminal 31, earth
•      4 -     MFI memory switch (Reset) *
•      5 -     Terminal 31 b, electronic - earth
•      6 -     MFI memory switch (Memory) *
•      7 -     Speed signal output
•      8 -     Oil pressure switch 1.8 bar
•      9 -     Oil pressure switch 0.3 bar
•      10 -     Terminal 1 / Terminal W
•      11 -     Terminal 30, battery positive
•      12 -     Terminal 58b, lighting
•      13 -     Terminal 15
•      14 -     Vacant
•      15 -     MFI call-up button (Mode) *
•      16 -     Alternator warning lamp, terminal 61
•      17 -     Oil temperature sender *
•      18 -     Dual circuit brake and handbrake system warning lamp
•      19 -     Ambient temperature sensor, signal *
•      20 -     Glow period warning lamp / CAT / Check
•      21 -     Fuel gauge
•      22 -     Left turn signal warning lamp
•      23 -     Coolant temperature gauge
•      24 -     Right turn signal warning lamp
•      25 -     Main beam warning lamp
•      26 -     Fuel consumption input signal *
•      27 -     Speed signal from speedometer sender (G22)
•      28 -     Selected gear indicator AG 4

* only with multi-function indicator

Fig.2     Connector pin assignment 28 pin socket 2

Note:

• ◆ Socket 2 only exists in dash panel inserts up to July 1995.
• ◆ From August 1995 all cables are connected to socket 1, socket 2 has been discontinued!

•      1 -     Airbag functions check
•      2 -     Airbag - control wire
•      3 -     Seat belt warning system warning lamp
•      4 -     vacant
•      5 -     vacant
•      6 -     Tailgate/boot lid warning lamp
•      7 -     11 : vacant
•      12 -     Airbag terminal 15
•      13 -     Airbag terminal 31
•      14 -     vacant
•      15 -     Gear display warning lamp (Ecomatic)
•      16 -     Engine running control lamp (Ecomatic)
•      17 -     Ecomatic warning lamp
•      18 -     Ecomatic control wire
•      19 -     28 : vacant